Wireless power experiments

RE: Wireless power experiments

bhfletcher — Thu, 22 Apr 2021 16:05:50 GMT

Hey, [mention:296c89b25d2c4d2ea7d35085b61af3e8:e9ed411860ed4f2ba0265705b8793d05] which specific renesas kit was this? Do they have a newer one that offers more power?

One big reason that I switched over to my latest phone with wireless charging was to avoid wearing out the connector, which is what I did on my last phone.

Bryan

RE: Wireless power experiments

ctammann — Mon, 19 Apr 2021 17:22:32 GMT

Thanks for the comments! You remind me I did leave out that market segment for only applying temporary power to a sensor node. I worked at a company briefly that used an energized coil to wirelessly power an implantable device to read back data. It was very cool technology. Periodic power rather than constant power is another great application for wireless.

RE: Wireless power experiments

shabaz — Sat, 17 Apr 2021 17:23:54 GMT

Hi Chris,

Another useful although indirect application is with NFC, where an unpowered device can have part of its circuitry powered up sufficiently enough for transferring data (could be credentials, or say log data). I'm thinking of devices that are in their shipping cartons, or that are inconvenient to attach to. These are things that are misusing NFC though, I don't think it was originally designed for it : ) Having a way of using wireless power to do it on the other hand, (say in conjunction with BLE or WiFi and crypto or other security related features in processors or other devices) could be very interesting, because then you've got the resources to implement things a lot more securely. And only low power may be needed (especially with BLE) so it could be very compact.

Maybe it's a new use-case : ) Not sure.

RE: Wireless power experiments

dougw — Fri, 16 Apr 2021 21:07:56 GMT

I worked on wireless power to an artificial heart once, but on element14 there are different projects:

The KLINGMAGON Subspace Probe

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